body::-webkit-scrollbar {
    width : 0px;
    height: 0px;
}

* {
    margin     : 0;
    padding    : 0;
    box-sizing : border-box;
    font-family: Helvetica, "PingFang SC", "Microsoft Yahei", sans-serif;
}

img {
    width: 100%;
}

:root {
    --primary-color        : #ff434f;
    --secondart-color      : #e3e3e3;
    --text-color-lightest  : #e7e9ec;
    --text-color-darker    : #2e2e2e;
    --text-color-dark      : #494949;
    --text-color-gery      : #8b8b8b;
    --text-color-dark-grey : #727272;
    --text-color-light-grey: #c6c6c6;
    --backdrop-color       : rgba(42, 42, 42, 0.69);
}

header {
    width  : 100vw;
    height : 80px;
    display: grid;
    padding: 0 40px;

    grid-template-columns: 1fr 2fr;
    align-items          : center;
    position             : relative;
    z-index              : 200;
}

.logo {
    font-size  : 24px;
    font-weight: 600;
    color      : var(--text-color-lightest);
}

header nav {
    justify-self: end;
}

header nav i {
    color: var(--text-color-lightest);
}

header nav a {
    color          : var(--text-color-lightest);
    text-decoration: none;
    margin         : 0 24px;
}

header .burger {
    display: none;
}

header.sticky {
    position        : fixed;
    background-color: white;
    box-shadow      : 0px 0px 24px rgba(0, 0, 0, 0.2);
    animation       : dropDown 0.5s ease-in-out forwards;
}

header.sticky .logo,
header.sticky nav i,
header.sticky nav a {
    color: var(--text-color-darker);
}

@keyframes dropDown {
    from {
        transform: translateY(-100px);
    }

    to {
        transform: translateY(0);
    }
}

.glide {
    position: relative;
    top     : -80px;
    z-index : 50;
}

.glide__slide img,
.glide__slide video {
    width     : 100vw;
    height    : 100vh;
    /* 自动等比例缩放 */
    object-fit: cover;
}

.slide-caption {
    position  : absolute;
    z-index   : 70;
    color     : var(--text-color-lightest);
    text-align: center;
    max-width : 60vw;
}

.glide__slide {
    display        : flex;
    align-items    : center;
    justify-content: center;
}

.backdrop {
    position        : absolute;
    width           : 100%;
    height          : 100%;
    z-index         : 60;
    background-color: var(--backdrop-color);
    top             : 0;
    left            : 0;
    opacity         : 0.5;
}

.slide-caption h1 {
    font-size  : 54px;
    font-weight: 600;
}

.slide-caption h3 {
    font-size: 24px;
    margin   : 48px 0;
}

.slide-caption.left {
    width     : 80vw;
    text-align: left;
}

.slide-caption>* {
    opacity: 0;
}

.explore-btn {
    padding         : 14px 32px;
    background-color: var(--primary-color);
    border          : 0;
    border-radius   : 4px;
    color           : var(--text-color-lightest);
    font-size       : 18px;
    cursor          : pointer;
    outline         : none;
}

/* 内容区域 */
/* 通用样式 */

.content-wrapper {
    display        : flex;
    align-items    : center;
    justify-content: center;
    flex-direction : column;
}

section {
    display        : grid;
    justify-items  : center;
    justify-content: center;
    max-width      : 1280px;
    padding        : 0 80px;
}

.section-bg {
    position: relative;
}

.section-bg::before {
    content         : "";
    display         : block;
    background-color: #f9fbfb;
    width           : 100vw;
    height          : 100%;
    z-index         : -1;
}

.title1 {
    font-size: 34px;
    color    : var(--text-color-darker);
}

.title1::after {
    content         : '';
    display         : block;
    margin-top      : 14px;
    background-color: var(--primary-color);
    width           : 80%;
    height          : 4px;
    transform       : translateX(10%);
}

.intro {
    font-size: 18px;
    margin   : 28px 0 60px 0;
    color    : var(--text-color-dark-grey);
}

/* 关于我们 */

.about-us {
    margin-bottom: 34px;
}

.features {
    display              : grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows   : repeat(2, 126px);
    column-gap           : 5vw;
}

.feature {
    display: grid;
    grid-template-areas:
        "icon title"
        "icon content";
    grid-template-columns: 60px 1fr;
    grid-template-rows   : 1fr 3fr;

}

.feature i.fas {
    grid-area: icon;
    font-size: 34px;
    color    : var(--primary-color);

}

.feature-title {
    grid-area: title;
    font-size: 18px;
    color    : var(--text-color-darker);
}

.feature-content {
    grid-area : content;
    margin-top: 8px;
    color     : var(--text-color-gery);
}

/* 成功案例 */
.showcases {
    max-width  : unset;
    padding    : 0px;
    padding-top: 72px;
}

.filter-btns {
    margin-top   : 54px;
    margin-bottom: 38px;
}

.filter-btn {
    margin          : 0 7px;
    padding         : 8px 18px;
    background-color: var(--secondart-color);
    border          : 0;
    border-radius   : 4px;
    color           : var(--text-color-dark-grey);
    cursor          : pointer;
    transition      : 0.4s;
}

.filter-btn:focus,
.filter-btn:active {
    outline: none;
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--primary-color);
    color           : white;
}

.showcases .cases {
    width: 100vw;
}

.showcases .case-item {
    width   : 25vw;
    height  : 20vw;
    overflow: hidden;
}

.case-item img {
    height    : 100%;
    object-fit: cover;
}

/* 服务流程 */
.service {
    margin-top: 131px;
}

.services {
    display              : grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows   : repeat(2, 1fr);
    column-gap           : 38px;
    row-gap              : 34px;

}

.service-item {
    display: grid;
    grid-template-areas:
        "icon title"
        "icon content";
    grid-template-columns: 70px 1fr;
    grid-template-rows   : 1fr 3fr;
    padding              : 24px;
    box-shadow           : 0 0 18px rgba(0, 0, 0, 0.06);
}

.service-item i.fas {
    grid-area  : icon;
    font-size  : 42px;
    color      : var(--primary-color);
    padding-top: 4px;

}

.service-item .service-title {
    grid-area: title;
    color    : var(--text-color-darker);
    font-size: 24px;
}

.service-item .service-content {
    grid-area  : content;
    color      : var(--text-color-gery);
    line-height: 30px;
    font-size  : 16px;
    margin-top : 8px;
}

/* 团队介绍 */
.team-intro {
    margin-top    : 48px;
    padding-top   : 62px;
    padding-bottom: 52px;
    max-width     : 100%;
}

.team-members {
    display              : grid;
    grid-template-columns: repeat(4, 1fr);
    column-gap           : 24px;
    margin-top           : 86px;
    max-width            : 80%;
}

.team-member {
    background-color: white;
    box-shadow      : 0px 0px 24px rgba(0, 0, 0, 0.2);
    text-align      : center;
    padding-bottom  : 28px;
    transition      : 0.4s;
    display         : grid;
    justify-items   : center;
}

.profile-image {
    overflow: hidden;
}

.profile-image img {
    width          : 100%;
    height         : 264px;
    object-fit     : cover;
    object-position: top center;
}

.team-member .name {
    margin-top : 18px;
    font-size  : 18px;
    font-weight: 500;
    color      : var(--text-color-dark);
}

.team-member .position {
    color        : var(--text-color-dark-gray);
    margin-top   : 20px;
    margin-bottom: 18px;
}

.social-links {
    width          : 100%;
    max-width      : 200px;
    display        : flex;
    justify-content: space-between;
    padding        : 0 42px;
}

.social-links li {
    list-style: none;
}

.social-links li a {
    color          : var(--text-color-dark);
    text-decoration: none;
}

.team-member:hover {
    transform : translateY(-20px) scale(1.05);
    box-shadow: 0px 0px 36px rgba(0, 0, 0, 0.1);
}

/* 数据部分 */
.data-section {
    max-width          : unset;
    width              : 100vw;
    height             : 255px;
    background-image   : url(./images/adult-business-computer-contemporary-380769.jpg);
    background-size    : cover;
    background-position: center;

    display              : grid;
    grid-template-columns: repeat(4, minmax(auto, 220px));
    justify-content      : center;
    align-items          : center;
    position             : relative;
    z-index              : 20;
}

.data-section::before {
    content         : '';
    display         : block;
    position        : absolute;
    background-color: var(--backdrop-color);
    width           : 100%;
    height          : 100%;
    z-index         : 1;
}

.data-piece {
    display           : grid;
    grid-template-rows: repeat(3, 1fr);
    justify-items     : center;
    z-index           : 40;
    color             : white;
}

.data-piece .fas {
    font-size: 44px;
}

.data-piece .num {
    margin-top : 7px;
    font-size  : 41px;
    font-weight: 600;
}

.data-piece .data-desc {
    font-size  : 18px;
    font-weight: 500;
}

/* 公司动态 */

.company-activities {
    margin-top: 84px;
}

.activities {
    display              : grid;
    grid-template-columns: repeat(3, 1fr);
    column-gap           : 24px;
}

.activity {
    box-shadow: 0px 0px 24px rgba(0, 0, 0, 0.1);
    padding   : 24px;
    transition: 0.4s;
}

.act-image-wrapper {
    height       : 255px;
    overflow     : hidden;
    margin       : -24px;
    margin-bottom: 0;
}

.act-image-wrapper img {
    min-height: 300px;
    object-fit: cover;
}

.activity .meta {
    margin-top   : 20px;
    margin-bottom: 12px;
    color        : var(--text-color-light-grey);
    display      : flex;
}

.activity .meta>p:last-child {
    margin-left: 36px;
}

.act-title {
    color        : var(--text-color-dark);
    font-size    : 18px;
    margin-bottom: 16px;
}

.activity article {
    font-size: 12px;
    color    : var(--text-color-gery);
}

.activity .readmore-btn {
    border          : 0;
    border-radius   : 4px;
    color           : white;
    background-color: var(--primary-color);
    padding         : 6px 14px;
    margin-top      : 24px;
}

.activity:hover {
    transform : translateY(-20px) scale(1.05);
    box-shadow: 0px 0px 24px rgba(0, 0, 0, 0.1);
}

/* 底部信息 */
footer {
    margin-top      : 124px;
    background-color: #181818;
    display         : grid;
    justify-items   : center;
    padding-top     : 72px;
    padding-bottom  : 24px;
}

.footer-menus {
    width                : 100%;
    max-width            : 1180px;
    display              : grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    padding              : 0 80px;
    position             : relative;
}

.menu-title {
    color        : white;
    font-size    : 16px;
    font-weight  : 600;
    margin-bottom: 20px;
}

.contact-us {
    justify-self: start;
    color       : var(--text-color-lightest)
}

.contact-us p:not(:first-child) {
    padding-bottom: 16px;
}

.menu-items li {
    list-style    : none;
    font-size     : 14px;
    padding-bottom: 8px;
}

.menu-items li a {
    text-decoration: none;
    font-weight    : 300;
    color          : var(--text-color-lightest);
}

.icp-info {
    margin-top   : 24px;
    margin-bottom: 16px;
}

.icp-info,
.rights {
    grid-column : 1/-1;
    justify-self: center;
    color       : white;
}

.scrollToTop {
    display : none;
    position: relative;
    z-index : 100;
}

.scrollToTop a {
    background-color: var(--primary-color);
    width           : 32px;
    height          : 32px;
    border          : 0;
    border-radius   : 4px;
    display         : flex;
    align-items     : center;
    justify-content : center;
    color           : white;
    text-decoration : none;
    position        : fixed;
    bottom          : 60px;
    right           : 30px;
}

/* 响应式 */
@media(max-width:1100px) {
    header nav {
        display: none;
    }

    header {
        grid-template-columns: 1fr 1fr;
    }

    header .burger {
        display     : block;
        width       : 20px;
        height      : 6px;
        position    : relative;
        justify-self: end;
        cursor      : pointer;
    }

    .burger-line1,
    .burger-line2,
    .burger-line3 {
        width           : 20px;
        height          : 2px;
        background-color: var(--text-color-lightest);
    }

    .burger-line1 {
        position: absolute;
        top     : -6px;
    }

    .burger-line3 {
        position: absolute;
        top     : 6px;
    }

    header.open nav {
        display         : grid;
        position        : absolute;
        left            : 0;
        top             : 0;
        width           : 100vw;
        height          : 100vh;
        background-color: white;
        grid-auto-rows  : max-content;
        justify-items   : end;
        padding         : 0 40px;
        opacity         : 0;
        animation       : slideDown 0.6s ease-in-out forwards;
    }

    header.open nav>* {
        color    : var(--text-color-darker);
        animation: showMenu 0.5s linear forwards 0.4s;
        font-size: 18px;
        margin   : 4px 0px;
        opacity  : 0;
    }

    header.open nav>* {
        margin-top: 10px;
    }

    header.open .burger-line1,
    header.open .burger-line2,
    header.open .burger-line3,
    header.sticky .burger-line1,
    header.sticky .burger-line2,
    header.sticky .burger-line3 {
        background-color: var(--text-color-darker);
        transition      : 0.4s;
    }

    header.open .burger-line1 {
        transform: rotate(45deg) translate(3px, 5px);
    }

    header.open .burger-line2 {
        transform: 5px;
        opacity  : 0;
    }

    header.open .burger-line3 {
        transform: rotate(-45deg) translate(3px, -5px);
    }



    header.open .logo {
        z-index: 40;
        color  : var(--text-color-darker);
    }

    @keyframes slideDown {
        from {
            height : 0;
            opacity: 0;
        }

        to {
            height     : 100vh;
            padding-top: 100px;
            opacity    : 1;
        }

    }

    @keyframes showMenu {
        from {
            transform: translateY(-1vh);
            opacity  : 0;
        }

        to {
            transform: translateY(0);
            opacity  : 1;
        }
    }

    .service-item .service-title {
        font-size: 20px;
    }

    .service-item .service-content {
        font-size  : 14px;
        line-height: 24px;
    }

    .team-members {
        grid-template-columns: repeat(2, 1fr);
        row-gap              : 36px;
        column-gap           : 6vw;
    }

    .activities {
        grid-template-columns: repeat(2, 1fr);
        row-gap              : 36px;
    }
}

@media(max-width:992px) {

    .slide-caption h1 {
        font-size: 48px;
    }

    .slide-caption h3 {
        font-size: 18px;
    }

    .features,
    .services {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows   : unset;
    }

    .data-section {
        grid-template-columns: repeat(2, minmax(200px, auto));
        padding              : 24px 0px;
        height               : auto;
        row-gap              : 24px;
        column-gap           : 6vw;
        background-size      : 200%;
    }

    .showcases .case-item {
        width: calc(100vw/3);
    }
}

@media(max-width:768px) {

    .section,
    .footer-menus {
        padding: 0 40px;
    }

    .footer-menus {
        grid-template-columns: 2fr repeat(2, 1fr);
        row-gap              : 24px;
    }

    .contact-us {
        grid-row: 1/3;
    }

    .footer-menu {
        text-align: right;
    }

    .activities {
        grid-template-columns: 1fr;
        row-gap              : 36px;
    }

    .data-section {
        grid-template-columns: 1fr;
        background-size      : 300%;
    }

    .team-members {
        grid-template-columns: minmax(200px, 400px);
    }

    .features,
    .services {
        grid-template-columns: 1fr;
    }

    .showcases .case-item {
        width : calc(100vw/2);
        height: 30vw;
    }

}

@media(max-width:576px) {
    .slide-caption h1 {
        font-size: 28px;
    }

    .slide-caption h3 {
        font-size: 14px;
    }

    .explore-btn {
        font-size: 14px;
        padding  : 8px 18px;
    }

    .showcases .case-item {
        width : 100vw;
        height: 60vw;
    }

    .data-section {
        background-size: 400%;
    }

    .footer-menus {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
    }

    .contact-us{
        grid-column: 1/-1;
    }

    .footer-menu{
        justify-self: start;
        text-align: left;
    }

}